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- since 1996 -

Sonatest Ltd
From our three distinct business centres in the UK, USA and CANADA, Sonatest design and produce a leading range of high performance ultrasonic NDT equipment and accessories.
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Technical Discussions
Elmar van den Elzen
Engineering,
Lismar Engineering B.V., Netherlands, Joined Aug 2000, 15

Elmar van den Elzen

Engineering,
Lismar Engineering B.V.,
Netherlands,
Joined Aug 2000
15
04:25 May-08-2001
demagnatise

Dear readers,

We sometimes have to demagnatise rolls off hard steel types. This is usually done with a AC-yoke. On some rolls this removes all magnetism effectively, but on other rolls a fine pattern of considerably strong magnatism is introduced in the roll surface. Could anybody give (practical) advise on improved procedures to demagnitising these rolls?

Thanx, Elmar van den Elzen


 
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